/*
 * Copyright (c) 2007-2008, Thomas Krause (tho.krause@gmail.com)
 * 
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *     * Neither the name of gidoo nor the names of its contributors may be used to
 *       endorse or promote products derived from this software without specific
 *       prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.gidoo.cms.helper;

import java.util.logging.Level;
import java.util.logging.Logger;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import org.apache.wicket.RequestCycle;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.request.target.resource.ResourceStreamRequestTarget;
import org.gidoo.cms.GidooCMS;
import org.gidoo.cms.login.GidooCMSSession;

/**
 * A link that will stream a resource content to the browser.
 * @author <a href="mailto:tho.krause@gmail.com>Thomas Krause</a>
 */
public class ResourceDownloadLink extends Link
{

  String resourcePath;
  
  /**
   * Constructor.
   * @param id The wicket id.
   * @param resource The resource to stream.
   */
  public ResourceDownloadLink(String id, Node resource)
  {
    super(id);    
    try
    {
      resourcePath = resource.getPath();
    }
    catch(RepositoryException ex)
    {
      Logger.getLogger(ResourceDownloadLink.class.getName()).log(Level.SEVERE, null, ex);
      error(getString("jcrerror"));
    }
  }
  
  @Override
  public void onClick()
  {
    try
    {
      if(resourcePath == null)
      {
        return;
      }
      Node resource = ((GidooCMSSession) getSession()).getJcrRootNode().getNode(resourcePath.substring(1));

      CMSResourceStreamWriter writer = new CMSResourceStreamWriter(resource, (GidooCMS) getApplication());
      String name = resource.getName();
      if(resource.getParent().getName().equals("drafts"))
      {
        name = Tools.draftName2Path(name);
        name = name.substring(name.lastIndexOf("/")+1);
      }
      
      RequestCycle.get().setRequestTarget(new ResourceStreamRequestTarget(writer, name));
    }
    catch(RepositoryException ex)
    {
      Logger.getLogger(ResourceDownloadLink.class.getName()).log(Level.SEVERE, null, ex);
      error(getString("jcrerror"));
    }

  }
}
